CN1072855C

CN1072855C - Electric motor

Info

Publication number: CN1072855C
Application number: CN97191362A
Authority: CN
Inventors: 米夏埃尔·蒂舍尔; 马丁·胡贝尔; 哈罗德·比策; 威廉·布劳恩
Original assignee: Robert Bosch GmbH
Current assignee: Robert Bosch GmbH
Priority date: 1996-10-12
Filing date: 1997-08-23
Publication date: 2001-10-10
Anticipated expiration: 2017-08-23
Also published as: DE19642132A1; EP0868769B1; EP0868769A1; WO1998016987A1; JP2000502559A; US6121702A; CN1205130A; DE59712332D1; ES2243991T3

Abstract

The invention relates to an electric machine with a bowl-shaped housing (5) and a connection (3) for externally supplying power to a corresponding electric machine part (9). The salient point of the present invention is that wiring device (3) has a conductive strip (19) that is contained in the casing, and this conductive strip can at least partly pass through the opening (31) on the casing wall insulator to move out, and its outer The end is electrically connected with the connecting wire, and the inner end is electrically connected with the corresponding motor part.

Description

Motor

The present invention relates to a kind of with alms bowl shape casing and be furnished with a motor of giving the termination of corresponding motor parts from externally fed.

Above-mentioned this motor is that people are familiar with.It has one to add a cover the alms bowl shape casing that seals above the usefulness usually.Necessary electrical component is contained in the casing in advance, and the electric elements on direct current machine are a commutator and the brush of the closing of contact with it.

Power to brush by cable, one of this cable is adopted soldering to be fixed on the brush, and unlimited recess in edge or the opening directed outward on the casing are passed in the other end.These wiring are must be before motor is installed loam cake affixed and draw.If length is not enough, directly energized must adopt other feed wire to connect.

Certainly, the cable joint of casing outside especially aspect liquid seal, connects to compare with the insulation of the self sealss in the casing and exists bigger defective.

If use the long lead that connects that has prepared, the defective that it brings is to lose flexibility, to such an extent as in the use of not expecting in advance or when the change wiring, if do not adopt above-mentioned outer connected mode, just have to open casing and insert new wiring.

The objective of the invention is, a kind of motor is provided, its cost is low, and the lead connection flexibility is big, and casing sealing is not subjected to effect of connection.

According to the present invention, a kind of motor has been proposed, it has an alms bowl shape casing and one give the power supply of associated motor parts from the outside termination, this termination have at least one be contained in the casing, can partly pass that the upper shed of enclosure wall insulant is shifted out at least and its outer end is connected with a connecting line, the inner and corresponding motor parts can conduct electricity the bus that is connected.

Since termination of the present invention have at least one be contained in the casing, can pass the bus that the opening on the enclosure wall outwards moves again, so these wiring also can be fixed in the casing of sealing.For this reason, bus can only part outwards be extracted out, with capable again being pressed into after wiring is connected.

Preferablely be, dispose bus like this and be convenient to it and move radially that particularly bus places on the carriage in the casing, and it can only in one plane be moved to alms bowl shape casing.

Brush is powered by lead, and these leads mainly are in the binding clip that is inserted on bus the inner, and perhaps welding or soldering are connected on the binding clip more precisely.Like this, it is comparatively easy to finish the wiring operation.

Stube cable mainly is with connecting perpendicular to the wiring section of moving direction on the bus, adopt welding, brazing filler metal, be threaded or inserting mode affixed.

Particularly on bus specialized designs a boss, it with carriage on one correspondingly hang body and cooperate and constitute a kayser.Boss is locked on the position of insertion bus with this configuration of hanging body, moves to prevent that bus is accidental.

Comparatively speaking, the advantage that motor of the present invention has is, even if lead still can carry out with being connected after motor mounting cover loam cake of brush.In addition, the tie point of brush and external wiring is in casing, and the sealing that this casing provided also can be used for this connection like this.Therefore, can cost saving under the situation that does not influence lead connection flexibility and casing sealing.

Outstanding advantage in addition is, the similar slide of carriage retained part, and horizontal bus on it, this slide bus that can lead on three sides at least.

This invention can be described in detail by means of an embodiment with reference to the accompanying drawings, wherein

Fig. 1 a to 1c is each cutaway view of motor part when different erection stage.

Fig. 2 is the fragmentary, perspective view of a termination.

Fig. 1 has showed motor 1 with the cutaway view form, therefrom especially can be clear that termination 3.Here not only use the part that illustrates in the motor 1 that constitutes commutator one motor, but also make following brief description:

Motor 1 has an alms bowl shape casing 5, and it is an opening in the front parallel with drawing.This opening is usually with a bearing cap sealing.

Commutator 7 of horizontal in the casing 5, unshowned lead is guided motor coil into from commutator.By brush 9 power supplies.The brush of these two mutual vertical arrangements always keeps and can radially move towards brush carrier 11 interior circular distributor rings 7.

Each brush 9 is electrically connected by the lead 13 same binding clips 15 that are connected to lead 17 separately.

This lead 17 leads to a bus 19, and it is parts of termination 3.Lead 17 is inserted in the binding clip that sets in advance on bus also firm affixed.

Bus 19 is made by electric conducting material, and as copper, it is microscler, as a lath.Inner termination at bus is equipped with a binding clip 21 perpendicular to the bus longitudinal axis.Another binding clip 23 that is used for the external wiring of clamping perpendicular to longitudinal axis is equipped with in another termination.

Because bus 19 has conductivity,, be connected with brush 9 conductions by binding clip 21, lead 17, binding clip 15 and the lead 13 that conducts electricity so can make external wire clamp 23 with same conductive capability.

Bus 19 is contained in the carriage 25, and carriage 25 limits bus along its lengthwise movement.For this reason, the vertical lateral parts of all of bus 19 all is attached on the carriage 25 corresponding qualification faces.So bus can only be along the longitudinal movement.

Carriage 25 is contained in the casing, the radial parallel of its longitudinal axis and circular casing.As can be seen from the figure, in the upper end of carriage 25 pressing plate 27 is housed, moves upward with the restriction bus with reference to the drawing plane.Fig. 1 clearly illustrates that pressing plate 27 is not all to be distributed on the width of bus 19, and only is confined in the marginal zone of bus.So two relative pressing plates 27 constitute a notch 29.The width of notch 29 is equivalent to the width of internal wiring folder 21 at least, so that when bus 19 moves, binding clip 21 can be walked between this two block pressur plate.

An opening 31 is arranged on the enclosure wall insulant in termination 3 scopes, and the selected of its size should be able to make two buss 19 outwards pull out by this opening.

Fig. 1 b shows has the motor 1 of pulling out bus 19 shown in Fig. 1 a.The segment distance that these two buss shift out is equivalent to the length of itself.At this moment, internal wiring folder 21 is stoped by a block that is arranged in the carriage 25 outer end Head Sections.This block guarantees that bus 19 can be from all extractions in the casing.

Under the state that bus 19 is extracted out, wiring 33 can be fixed on the binding clip 23 by plain mode, for example comes fastening by soldering or welding or simple clamping method.Wiring 33 itself is clamped by wiring flange 35.This flange is that every connecting line 33 is provided with cable aperture 37, and sealing shroud 39 is housed in the hole.The sealing cover is used for liquid being flowed into the hermetically-sealed cable hole by this orifice flow through connecting line 33.Here mainly be meant so-called single core sealing shroud.

Can be clear that from cutaway view the circular wall insulant of the shape of wiring flange 35 and casing 5 is complementary.Wiring flange 35 has a closed convex shoulder 41 that swells at adjacent surface in cable aperture 37 positions.The size of the closed convex shoulder 41 of this wiring is suitable with the size of opening 31, so that it is clogged opening fully.

This point has been presented among Fig. 1 c.The final step program is, wiring flange 35 radially inwardly is pressed into towards commutator 7, until wiring flange 35 pasting the wall insulant of casing 5 with the electric machine casing facing surfaces till.Scheme thus also can know and see, the situation of the convex shoulder 41 filling openings 31 of wiring flange 35.The radical length of the closed convex shoulder 41 of wiring is slightly larger than the enclosure wall insulation thickness, so that the binding clip 23 of bus 19 lies against in the casing.With bolt 43 link flanges 35, these bolts are passed in the respective aperture of reserving on wiring flange 35 and casing 5 walls.In order to seal these holes, on bolt 43, installed conventional seals cover 45 additional.

In order to prevent that liquid from passing through opening 31 and flowing in the casings, wiring flange 35 has disposed sealing ring 47, sealing circle sealing convex shoulder 41, and at the state lower seal opening 31 of bolted.

From Fig. 2 perspective cut-away schematic view, can see termination 3 and wiring flange 35, also can be clear that the binding

clip

21 and 23 that is installed on the bus 19, and the binding clip 15 that has been fixed with lead 17.

Bus 19 horizontal are on supporting plate 51, and supporting plate is overlapped on perpendicular to bus longitudinally between the floor.The pressing plate 27 that the restriction bus moves upward is housed on the opposite of supporting plate 51.

In Fig. 2, can't see outside being arranged in floor 53 positions, be positioned at 19 lip-deep towards the bus of supporting plate 51, when bus is extracted out, at first to slide into the boss on floor 53 upper limbs.Therefore, be necessary with pulling out energetically, so that can stop the accident of bus 19 to skid off.Certainly, this boss also can be placed on binding

clip

23 or 21.

Can be clear that from Fig. 2 carriage 25 is members of brush carrier 11.

As mentioned above, be close on the enclosure wall insulant, seal up opening 31 by sealing ring 47 simultaneously towards the surface of the wiring flange 35 of casing 5.In addition, the convex shoulder 41 of wiring flange 35 passes opening 31 and stretches in the casing, and the circumferential surface of convex shoulder 41 is close on the inner surface of opening 31.

The cable aperture 37 that extends to the wiring flange 35 in the casing prevents the inflow of liquid through multiple tracks cable aperture sealing 39 sealing well.

Claims

1. An electric motor, which has a bowl-shaped casing (5) and a wiring device (3) for externally supplying power to relevant motor components (9.1 and 9.2), characterized in that at least one of the wiring devices (3) is mounted on Conductive strips (19) inside the housing that can be at least partially removed through openings (31) in the housing wall insulation and whose outer ends are connected to a connection line and whose inner ends are electrically conductively connected to the corresponding motor parts.

2. Electric machine according to claim 1, characterized in that each connection line (33) is provided with a busbar (19).

3. 2. Electric machine according to claim 1 or 2, characterized in that the busbar (19) is movable parallel to the radial direction of the bowl-shaped housing (5).

4. Electric machine according to claim 1 or 2, characterized in that the bus bar (19) is mounted in a bracket (25) inside the housing.

5. 2. Motor according to claim 1 or 2, characterized in that the inner end of the bus bar (19) is provided with a terminal clamp which can clamp or weld or solder a wire, thereby making the electrical connection.

6. The motor according to claim 5, characterized in that the terminal clip (21) is mounted perpendicular to the direction of movement of the busbar.

7. 2. Motor according to claim 1 or 2, characterized in that the outer ends of the busbars (19) have a connection section extending perpendicularly to the direction of movement.

8. According to the motor according to claim 4, it is characterized in that, on the plane of the conductive strip (19) facing the bracket (25), a boss is provided, which plays a releasable role with the corresponding groove on the bracket. Card lock action.

9. The motor according to claim 4, characterized in that the bracket (25) has a structure similar to a slide seat, in which the conductive strips are laid flat, and at least one pressing plate (27) is arranged on the bracket (25). The pressing plate is at least partly overlapped on the conductive strip (19) to limit the movement of the conductive strip (19) on the sliding seat perpendicular to the moving direction.

10. The motor according to claim 7, characterized in that a terminal flange (35) is provided in advance, which can be connected to the terminal section of the busbar (19), and is constructed in such a way that the terminal flange is tightly attached to the machine. on the outer wall surface of the shell (5) and seal the opening (31).

11. The motor according to claim 10, characterized in that the connection flange (35) has a cable gland (39), which is mounted on the connection (33) connected to the bus bar and seals the cable leading to the housing hole (37).